Abdelgadir, Somaia Osman Mohamed, and Ahmed Osman Ibrahim Ahmed. “The Impact of Using Waiting Lines on Logistics Services at Port Sudan Port: A Theoretical Study”. Journal of Ecohumanism 3, no. 8 (November 23, 2024): 1998–2012. Accessed April 3, 2025. https://ecohumanism.co.uk/joe/ecohumanism/article/view/4878.